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INCOME TAXES - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Loss Carryforwards [Line Items]      
Income tax benefit (expense) $ (2,403,000) $ 9,064,000 $ 246,881,000
Deferred tax asset valuation allowance 465,832,000 419,356,000  
Deferred tax liability 17,289,000 19,713,000  
Increase (decrease) in valuation allowance $ 46,500,000 $ 157,100,000  
Effective tax rate (1.20%) 1.30% 29.30%
Unrecognized tax benefit that would impact effective tax rate $ 36,400,000 $ 28,300,000 $ 21,800,000
Accrued interest or penalties 0 0 0
Recognized interest or penalties 0 0 0
Deferred tax asset      
Operating Loss Carryforwards [Line Items]      
Valuation allowances established 44,759,000 159,919,000 206,574,000
Acquisition and purchase accounting (475,000) $ 21,000 239,233,000
Deferred tax asset | Thrive      
Operating Loss Carryforwards [Line Items]      
Acquisition and purchase accounting 239,200,000    
Deferred tax asset | Genomic Health Inc      
Operating Loss Carryforwards [Line Items]      
Acquisition and purchase accounting     $ 239,200,000
Federal      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 402,900,000    
Operating loss carryforwards with no expiration date 278,500,000    
Operating loss carryforwards with expiration date 124,400,000    
Federal | Research      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforwards 70,900,000    
State      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 66,000,000    
State | Research      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforwards 33,000,000    
State | Research | California      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforwards 19,700,000    
Foreign      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards $ 10,400,000